Boom-rigging.



Patented Sept.. 30, [902.

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UNITED STATES PATENT yf'lifEEicE.,

FREDERIK V. NIELSEN. OF SAN FRANCISCO, CALIFORNIA.

BOOM-RIGGING.

SPECIFICATION forming part of Letters Patent No. 710,334, dated September 30, 1902.

Applicationfrled March 18, 1,902. Serial No. 98,729. (No model.) l

To all whom t may oon/cern:

Be it known that I, FREDERIK V. NIELSEN,

a citizen of the United States, and a resident mast, and iron or other metal sheets are secured on the masts to take the wear, and water getting beneaththe plate rots the mast. By my invention I seek to avoid this injury to the mast and provide a construction which will be simple, easily applied, and will efciently support the boom and permit the movements thereof in various directions as may be desired.

The invention consistsin certain novel constructions and combinations of parts, as will be hereinafter described and claimed.

In the drawings, Figure 1 is a side view of my invention, parts of the mast and boom being broken away. Fig. 2 is across-sectional view on about line 2 2 of Fig. l. Fig. 3 is a cross-section on about line 3 3 of Fig. l. Fig. 4 is a detail cross-section on about line 4 4 of Fig. 2. Fig. 5 is adetail perspective view of the sliding boom-carrier; Fig. 6 is a detail view illustrating the supporting-collar and the clamp by which the boom-carrier may bel held at diiierent heights. Fig. 7 is a detail cross-sectional View on about line 7 70E Fig. 2, and Fig. 8 is a detail perspective view of the clasp for the inner end of the boom.

The boom A, which may in general respects be of ordinary construction, is provided at its inner end with a clasp B, having the side plates B', which lap on opposite sides of the boom, and the end lugs B2, which project at the inner end of the clasp and lap on opposite sides of the lngC on the carrier C, such lug C' being provided with abolt-hole C3 and the lugs B2 having bolt-holes B3, the bolt D being passed through the coincident holes B3 and C3 to secure the boom-clasp pivotally to turning.

the lug C of the carrier C. This carrier C has an opening C2, which iits and slides on the upright bolt or rod E, which is secured to the mast F by means of the collars Gand H, as shown in Fig. l, aswill be presently described. The clasp Cimay turn on the vrod E, so the boom is capableY ofV a swinging movement in a horizontal plane bythe turning of the carrier C on the rod E and also of a vertically-swinging movement on the bolt D as a pivot- The boltD also secures the side plates I for the clue-line ring J, said plates I being provided near their lower ends -with boltholes i for the boltvD and being shouldered at t" to rest upon the upper edges of the lugs B2 and being provided-at their upper4 ends with ears 2, between whichV the ring .I is secured by means of the bolt I', as best shown in Figs. l, 2, and 7. Thisprovides a convenient construction for securing the tack or clue in connection with the pivot-bolt on which the boom swings, as will be understood from Figs. l, 2, and 7. A collar K fits on the rod E below the carrier C and may be secured in any desired adjustment by the clamping-screw K', as will be understood from Figs. l and 6. The collars G and Hare fitted around the mast F and are provided with eyes g and h for the rod E, which rod may be in the form of, a bolt having a head E at one end and a nut E2 at the other, the said head and nut being arranged, respectively, above the eye g and below the eye h, as shownin Fig. 1. These-bands G and H are preferably made in two sections, each section being provided at its end with lugs G and'H, connected by the bolts G2 and H2, the said bolts .being provided with angular portions l, adjacent to their heads, (see Fig. 4,) fitting in corresponding openings in one of the ears, so the bolts will be heldfrom Betweenthe ears or lugs H' of the lower collar I support on the bolts H2 the rings L, which willbe useful in adjustingthe deckload lashings. I also provide the upper and lower collars G and H witheyes G3 and H3 to receive belaying-pins M and N, as will be understood from Figs. l, 2', Yand 3, for boomtackle and for the ga-topsail, sheet, and the like.

As will be understood from the drawings, a boom can swing freely up and down and IOO sidewise, and when the sail is set and the boom hangs with its weight on the sail the boom can rise or fall as the sail shrinks or eX- A pands. By means of the adjusting-collar K (shown in Fig. 6) the boom can be raised or lowered at its inner end as may be desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination substantially as herein described of the mast, the collars thereon, the rod extending between and supported by said collars and spaced away from the mast, the boom-carrier sliding on said rod and provided with a projecting lug, the boom, the boomclasp, a bolt by which the inner end of the boom-clasp is pivoted in connection with the lug of the boom-Carrier, the elue-line ring, the bolt securing said ring and the opposite plates fitted at their upper ends on opposite sides of the clue-line ring and secured at their lower ends by the pivot-bolt of the boom substantially as set forth.

2. In a boom-rigging substantially as described the combination with the mast and the boom, of the upper and lower collars, and guide-rod extending between the said collars, a carrier for the boom supported on said rod, and rings on the lower collar for the deck-load lashing, substantially as set forth.

3. The combination with the upright guiderod and means for securing the same to the mast, of the carrier sliding on said rod and provided with a lug, the boom, the boomelasp provided at its inner end with lugs titting on opposite sides of the lug ofthe earrier, the clue-ring, the plates tting at their upper ends alongside the ring and provided with a bolt for securing said ring and fitting at their lower ends along the outer sides of the opposite lugs of the boom-clasp, and the bolt passed thro ugh said plates and the lapped lugs of the boom clasp and carrier, substanfially as and for the purposes set forth.

FREDERIK V. NIELSEN. Vitnesses:

WALTER PETERSEN, F. RIME. 

